T Jake Luciani created CASSANDRA-5033:
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Summary: Keep intransit mutation tracking off heap
Key: CASSANDRA-5033
URL: https://issues.apache.org/jira/browse/CASSANDRA-5033
Project: Cassandra
Issue Type: New Feature
Components: Core
Affects Versions: 1.1.0
Reporter: T Jake Luciani
When a node is down and writes are timing out to that node the coordinator
keeps the mutation in memory and writes out the hint on timeout.
The problem is under heavy write load these mutations pile up quite a bit (when
CL is low). It causes a lot of heap pressure and causes a lot of problems
(which shouldn't happen just because a node is down)
If we serialized the mutation and put it in a off heap cache vs on head we
could avoid this problem.
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